MILWAUKEE – When Cliff Floyd was pondering a move to New York, his mother had a bit of interesting advice for him: Be careful what you wish for.

Floyd went ahead and inked a four-year, $26- million pact with the Mets, ecstatic about the opportunity to be a big fish – or Marlin – in a big pond for the first time in his life. However, the history of modern civilization suggests things don’t always work out how people would like them to.

On Thursday afternoon in St. Louis, Floyd reached the lowest point of his season. He went 1-for-4 with a walk and an RBI, but nagging injuries and an incurably bad product on the field had Floyd singing the blues.

After Floyd watched Jim Edmonds’ game-winning homer clear the fence at Busch Stadium, he hobbled off the field after the 6-5, 10th-inning loss with a bad left knee, throbbing right Achilles and a serious case of seller’s remorse.

“I just envisioned a lot of things being different when I signed here,” Floyd said as the Mets’ losing streak extended to five games. “Me playing well and helping this team win was one of them. I’m nowhere near where I want to be.

“I envisioned having a lot of fun. I’m not doing that right now. It stinks.”

After Friday’s 9-3 victory over the Brewers, Floyd was singing a different tune. He went 2-for-4 with a homer, double and two RBIs, rebounding from a terrible at-bat in the first inning.

With Raul Gonzalez on third and Mike Piazza on second with nobody out, Floyd had an opportunity to drive in a run with a groundout or sac fly. Instead, the mostly ineffective Glendon Rusch induced a pop-up to first base from Floyd. Just like he did in the seventh inning Thursday, Floyd ran to first with his head down, ticked off that he had failed to come through for his team.

“I was just a little frustrated by the pop-up,” he said. “When you’re not aggressive and you’re feeling for the ball, you go bananas.

“I know what I’m capable of doing when I’m aggressive. For the first month and couple of days, it’s been like I’ve got blinders on.”

In his next at-bat in the third, with Piazza on first, Floyd smashed his overdue third homer of the season. Floyd went with a bad breaking ball on a 1-1 pitch from Rusch, hitting a laser beam over the fence in left-center.

“I was hoping sometime it would pay off,” Floyd said. “I was upset I didn’t come through [in the first inning]. They told me to be aggressive. Tony Clark told me that I’m not being as aggressive as I should be.”

Floyd, who has previously played in Florida and Montreal with a cup of coffee in Boston, is struggling with physical ailments as he tries to adjust mentally to the Big Apple. More than any other Met, Floyd is putting pressure on himself. In 26 games, he’s only hitting .250 with 10 RBIs. Friday was only the second multi-RBI game he’s produced.

“As a whole, we’ve been scuffling,” Floyd said. “We’ve been putting pressure on ourselves when guys are in scoring position. That’s a factor as to why we’re not scoring runs when the other team’s on the ropes.”